CN106841990A - Display screen detection means - Google Patents
Display screen detection means Download PDFInfo
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- CN106841990A CN106841990A CN201710083442.0A CN201710083442A CN106841990A CN 106841990 A CN106841990 A CN 106841990A CN 201710083442 A CN201710083442 A CN 201710083442A CN 106841990 A CN106841990 A CN 106841990A
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- 238000001514 detection method Methods 0.000 title claims abstract description 72
- 239000000523 sample Substances 0.000 claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims description 70
- 238000003825 pressing Methods 0.000 claims description 50
- 230000009471 action Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 13
- 238000013461 design Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2825—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere in household appliances or professional audio/video equipment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N2021/9513—Liquid crystal panels
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- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a kind of display screen detection means, including：Microscope carrier, pressure head, sensor detection unit and electrical detection unit；The microscope carrier is used to place display screen to be measured；The pressure head is arranged on one end of the microscope carrier；The sensor detection unit includes：Circuit board and testing touch screen device, the circuit board are arranged on the first surface of the pressure head；The testing touch screen device is electrically connected with the circuit board；The electrical detection unit includes：Probe, backlight, down polaroid and upper polaroid, one end of the probe are arranged on the first surface of the pressure head, and the other end of the probe protrudes from the first surface of the pressure head；The backlight and the down polaroid are cascading on the loading end of the microscope carrier from top to bottom；The upper polaroid is movably disposed in the down polaroid.Device of the invention sets probe again by both setting circuit board on pressure head, can simultaneously enter line sensor detection and electrical detection, improves operating efficiency.
Description
Technical Field
The invention relates to the technical field of display screen detection, in particular to a display screen detection device.
Background
In the field of manufacturing small-sized liquid crystal display screens, in order to ensure good performance of products, part of the products need to be subjected to electrical detection (ET test) and Sensor test (Sensor test) respectively in a panel (cell) manufacturing process section. The electrical detection mainly detects the visual performance and the electrical performance of a product, and the sensor mainly detects the electrical performance of a sensor (sensor). Electricity detects process and sensor and detects the process and be two independent processes, and the product will pass through electricity earlier and detect, later transports sensor detection device department again and carries out the sensor and detect, needs a link of transporting between the two, leads to work efficiency to reduce, increases simultaneously and causes the product to make bad risks such as decrease and surface foreign matter in the transportation. In addition, the electrical detection and the sensor detection are both manually operated, so that the risk of collision and abrasion is increased; and the labor intensity is high, two operators are required to operate, and the labor cost is relatively high.
Disclosure of Invention
The embodiment of the invention provides a display screen detection device, which aims to solve the problem that the sensor detection and the electrical detection in the prior art cannot be carried out simultaneously, so that the detection efficiency is low.
The technical scheme of the invention provides a display screen detection device, which comprises: the device comprises a carrying platform, a pressure head, a sensor detection unit and an electrical detection unit; the carrying platform is used for placing a display screen to be tested; the pressure head is arranged at one end of the carrying platform; the sensor detection unit includes: the circuit board is arranged on the first surface of the pressure head; the touch screen tester is electrically connected with the circuit board and used for processing data acquired by the circuit board; the electrical detection unit includes: the device comprises a probe, a backlight source, a lower polaroid and an upper polaroid, wherein one end of the probe is arranged on the first surface of the pressure head, and the other end of the probe protrudes out of the first surface of the pressure head; the backlight source and the lower polarizer are sequentially stacked on the bearing surface of the bearing platform from bottom to top; the upper polaroid is movably arranged on the lower polaroid; when the display screen detection device detects, the upper polaroid is positioned on the display screen to be detected, the circuit board test point and the probe test point on the display screen to be detected are exposed, and the pressure head moves towards the bearing surface of the carrying platform, so that the circuit board, the probe and the circuit board test point and the probe test point on the display screen to be detected are in contact.
Further, still include: the stage driving mechanism drives the stage to rotate and move in a first direction and a second direction which are perpendicular to each other so as to adjust the position of the display screen to be tested on the stage, so that the circuit board testing point of the display screen to be tested on the stage is superposed with the corresponding circuit board, and the probe testing point of the display screen to be tested is superposed with the corresponding probe.
Further, the stage driving mechanism includes: a rotating table, a first direction moving table and a second direction moving table; the first direction moving table is positioned on the rotating table, the second direction moving table is positioned on the first direction moving table, and the carrying platform is positioned on the second direction moving table; the rotating platform drives the first direction moving platform, the second direction moving platform and the carrying platform to rotate; the first direction moving platform drives the second direction moving platform and the carrying platform to move in the first direction; the second direction moving platform drives the carrying platform to move in the second direction.
Further, still include: the support is arranged at one end of the carrying platform and comprises a top plate, a bottom plate and two side plates.
Further, still include: and the pressure head adjusting mechanism is arranged on the support and used for driving the pressure head to move and adjust the pressure of the pressure head.
Further, the ram adjustment mechanism includes: the handle, the handle rotating shaft, the cam, the pressing plate, the elastic piece supporting plate, the locking support column and the locking nut; wherein the handle is arranged outside one side plate of the bracket; one end of the handle rotating shaft is connected with one end of the handle, and the other end of the handle rotating shaft is connected with the other side plate of the bracket; the cam is sleeved on the handle rotating shaft; the pressing plate is connected with the pressing head and comprises a first surface and a second surface which are opposite, the first surface of the pressing plate is connected with one end of the elastic piece, and the second surface of the pressing plate is opposite to the cam; the other end of the elastic piece is connected with the first surface of the elastic piece supporting plate, and the first surface of the elastic piece supporting plate is opposite to the first surface of the pressing plate; the center of the elastic piece supporting plate is provided with a through hole; one end of the locking strut is arranged on the bottom plate of the bracket, and the other end of the locking strut penetrates through the through hole; the locking nut is sleeved at the other end of the locking support column and used for limiting the position of the elastic piece supporting plate on the locking support column so as to adjust the length of the elastic piece and change the pressure of the pressure head; when the handle rotates towards a third direction, the handle rotating shaft is driven to rotate, the handle rotating shaft drives the cam to rotate, the cam presses the pressing plate downwards, the pressing plate moves towards the display screen to be tested, and the pressing head is driven to be close to the display screen to be tested until the pressing head is contacted with the display screen to be tested; when the handle rotates to the fourth direction, the handle rotating shaft is driven to rotate, the handle rotating shaft drives the cam to rotate, the cam is made to leave the pressing plate, the pressing plate moves upwards under the elastic action of the elastic piece, and the pressing head is driven to leave the display screen to be tested.
Further, still include: the upper polaroid driving mechanism is matched with the pressure head adjusting mechanism, and when the pressure head adjusting mechanism drives the pressure head to be close to the display screen to be tested on the platform deck, the upper polaroid driving mechanism drives the upper polaroid to move so that the upper polaroid is positioned on the display screen to be tested; when the pressure head adjusting mechanism drives the pressure head to be far away from the display screen to be tested on the carrying platform, the upper polaroid driving mechanism drives the upper polaroid to move so as to expose the display screen to be tested.
Further, the upper polarizer driving mechanism includes: the polarizer mounting frame is used for mounting the upper polarizer; the sector gear is sleeved on the handle rotating shaft, and the saw teeth of the sector gear are matched with the saw teeth of the rack; the rack is movable, and one end of the rack is connected with the upper polaroid mounting frame; the sector gear drives the rack to move along with the rotation of the handle rotating shaft, and the rack drives the upper polaroid mounting rack to move.
Further, still include: and the bracket inclination adjusting mechanism is used for adjusting the inclination of the bracket relative to the horizontal plane.
Further, the rack inclination adjusting mechanism includes: two support rods and at least two positioning pins; the two support rods are respectively arranged at the outer sides of the two side plates of the bracket, and each support rod is provided with a plurality of first positioning holes; two side plates of the bracket are respectively provided with at least one second positioning hole; each positioning pin penetrates through the first positioning hole in each supporting rod and the second positioning hole in the corresponding side plate of the support to fix the support and the supporting rod together; the positioning pin can penetrate through different first positioning holes and/or second positioning holes to adjust the inclination of the bracket.
In the embodiment of the invention, the circuit board and the probe are arranged on the pressure head, so that when the circuit board of the pressure head is contacted with the display screen to be detected, the sensor detection can be carried out, and because the probe is also arranged on the pressure head and is simultaneously contacted with the display screen to be detected, the electrical detection can be simultaneously carried out, therefore, two kinds of detection can be realized by one device, and the working efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a display screen detection device according to an embodiment of the present invention when a pressure head is lifted;
FIG. 2 is a schematic view of a display screen inspection device according to an embodiment of the present invention, showing a configuration when a ram is depressed;
FIG. 3 is a schematic view of the configuration of the indenter of the display screen sensing device according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a stage driving mechanism of the display screen detection apparatus according to the embodiment of the present invention;
FIG. 5 is a schematic view of a partial structure of a display screen detection apparatus according to an embodiment of the present invention;
fig. 6 is a side view of a partial structure of a display screen inspection apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a display screen detection device which can be used for simultaneously carrying out sensor detection and electrical detection on a display screen.
As shown in fig. 1 to 6, the apparatus includes: a stage 101, a ram 102, a sensor detection unit, and an electrical detection unit.
The carrier 101 is used for placing the display screen 103 to be tested.
The ram 102 is disposed at one end of the stage 101. The ram 102 includes first and second oppositely disposed surfaces. Preferably, the second surface of the ram 102 is provided with projections that can be used to connect to other components.
The sensor detection unit includes: a circuit board 105 and a touch screen tester 104. A circuit board 105 is disposed on a first surface of the ram 102. The touch screen tester 104 is electrically connected to the circuit board 105, and is configured to process data collected by the circuit board 105, so as to obtain a sensor detection result. Preferably, the circuit board 105 is disposed in the middle of the first surface of the ram 102.
The electrical detection unit includes: a probe 106, a backlight, a lower polarizer 107, and an upper polarizer 108. One end of the probe 106 is disposed on a first surface of the ram 102. The other end of the probe 106 protrudes above a first surface of the indenter 102. The backlight and the lower polarizer 107 are sequentially stacked from bottom to top on the carrying surface of the stage 101. The upper polarizer 108 is movably disposed on the lower polarizer 107. During the electrical test, the backlight emits light, and the lower polarizer 107 and the upper polarizer 108 enable an inspector to observe whether the display screen 103 to be tested is abnormal. Preferably, the probes 106 are positioned on the first surface of the indenter 102 near opposing corners.
When the display screen detection device detects, the upper polarizer 108 is located on the display screen 103 to be detected, and exposes the circuit board test point and the probe test point on the display screen 103 to be detected. The pressing head 102 moves towards the carrying surface of the carrier 101 so that the circuit board 105 and the probes 106 are in contact with the circuit board test points and the probe test points on the display screen 103 to be tested.
Through the structural design, the display screen detection device provided by the embodiment of the invention has the advantages that the circuit board 105 and the probe 106 are arranged on the pressure head 102, so that when the circuit board 105 of the pressure head 102 is contacted with the display screen 103 to be detected, the sensor detection can be carried out, and because the probe 106 is also arranged on the pressure head 102 and the probe 106 is also contacted with the display screen 103 to be detected, the electrical detection can be carried out simultaneously, so that two kinds of detection can be realized through one device, and the working efficiency is improved.
In a preferred embodiment of the present invention, the apparatus further comprises: a stage driving mechanism. The stage driving mechanism can drive the stage 101 to rotate and move in a first direction and a second direction which are perpendicular to each other, so as to adjust the position of the display screen 103 to be tested on the stage 101, so that the circuit board test point of the display screen 103 to be tested on the stage 101 coincides with the corresponding circuit board 105, and the probe test point of the display screen 103 to be tested coincides with the corresponding probe 106.
By the stage driving mechanism, the position of the stage 101 can be adjusted in any direction on the same plane, so that the circuit board test point of the display screen 103 to be tested can be conveniently overlapped with the corresponding circuit board 105, and the probe test point of the display screen 103 to be tested can be conveniently overlapped with the corresponding probe 106, so as to detect the display screen 103 to be tested.
Preferably, the stage driving mechanism can be realized by the following structural design:
this microscope stage drive mechanism includes: a rotary table 109, a first direction moving table 110, and a second direction moving table 111. The first direction moving stage 110 is located on the rotating stage 109. The second-direction mobile station 111 is located on the first-direction mobile station 110. The stage 101 is located on a first-direction moving stage 110. The rotation stage 109 may rotate the first direction moving stage 110, the second direction moving stage 111, and the stage 101. The first-direction moving stage 110 can drive the second-direction moving stage 111 and the stage 101 to move in the first direction. The second-direction moving stage 111 drives the stage 101 to move in the second direction.
Specifically, the rotating table 109 may be provided with a micrometer to achieve fine adjustment of the angle. The turntable 109 may be provided with a guide rail. A surface of the first direction moving stage 110 facing the rotating stage 109 is provided with a slider slidable on a guide rail. The movement of the first direction moving stage 110 is realized by adjusting the displacement of the slider by a micrometer. In addition, by providing the locking mechanism, the rotating table 109 and the first direction moving table 110 can be locked after the position is properly adjusted, thereby preventing the position from being changed due to the erroneous collision. Similarly, the surface of the first direction moving stage 110 facing the second direction moving stage 111 may be provided with a guide rail. A slider may be provided on the surface of the second-direction moving stage 111 opposite to the first-direction moving stage 110. The movement of the second-direction moving stage 111 is realized by adjusting the displacement of the slider by a micrometer. In addition, by providing the locking mechanism, the first direction moving stage 110 and the second direction moving stage 111 can be locked after the position is properly adjusted, so as to prevent the position from being changed due to mistaken collision.
More preferably, the apparatus further comprises: and a support table. The stage driving mechanism may be provided on the support stage.
It should be understood that the technical solution of the present invention is not limited thereto, and other structural designs of the stage driving mechanism may also be adopted.
Specifically, the device further comprises: a bracket 112. The support 112 is arranged at one end of the carrier 101. The bracket 112 includes a top plate, a bottom plate, and two side plates. The bracket 112 may be used to carry other mechanisms.
In a preferred embodiment, the apparatus further comprises: and a pressure head adjusting mechanism. The ram adjustment mechanism is disposed on the bracket 112. The ram adjustment mechanism is used to drive the ram 102 to move and adjust the pressure of the ram 102.
Preferably, the pressure head adjusting mechanism can be realized by the following structural design:
the pressure head adjustment mechanism includes: a handle 113, a handle rotation shaft 114, a cam 115, a pressing plate 116, an elastic member 117, an elastic member supporting plate 118, a locking support 119, and a locking nut 120.
Wherein, the handle 113 is arranged outside one side plate of the bracket 112. The handle 113 is used for a test person to hold to control movement of the ram 102.
One end of the handle rotating shaft 114 is connected with one end of the handle 113, and the other end of the handle rotating shaft 114 is connected with the other side plate of the bracket 112, so that the handle rotating shaft 114 can be supported, and the rotation of the handle rotating shaft 114 can not be limited. Specifically, a through hole may be formed in the other side plate of the bracket 112 so that the other end of the handle rotating shaft 114 is inserted into the through hole, or a locking groove may be formed in the other side plate of the bracket 112 so that the other end of the handle rotating shaft 114 is inserted into the locking groove. It should be understood that the other end of the handle rotating shaft 114 is connected to the other side plate of the bracket 112 in a non-limiting manner, and may be connected in other manners.
The cam 115 is fitted over the handle shaft 114. The cam 115 is rotated by the rotation of the handle rotation shaft 114, so that a force is applied to the pressing plate 116.
The platen 116 is coupled to the ram 102. Preferably, one side of the pressure plate 116 is fixedly connected with the protrusion of the pressure head 102. The platen 116 includes opposing first and second surfaces. Wherein a first surface of the pressing plate 116 is connected to one end of the elastic member 117, and a second surface of the pressing plate 116 is disposed opposite to the cam 115. The pressing plate 116 functions to move the ram 102 under the pressure of the cam 115 and the elastic force of the elastic member 117.
The other end of the elastic member 117 is connected to a first surface of an elastic member supporting plate 118. A first surface of the elastic member support plate 118 is disposed opposite to a first surface of the pressure plate 116. Since both the pressing plate 116 and the pressing head 102 are very light, the elastic member 117 functions to support the pressing plate 116 when the pressing plate 116 is not pressed by the cam 115. In addition, when the cam 115 presses the pressing plate 116, the elastic member 117 can also play a role in buffering, so that the phenomenon that the pressure of the pressing head 102 on the display screen 103 to be tested is too high and the display screen 103 to be tested is damaged due to too high moving speed of the pressing plate 116 is avoided.
Preferably, the number of the elastic members 117 is four, and the four elastic members are symmetrically disposed at positions near four corners of the elastic member supporting plate 118, so as to provide uniform elastic force to stably support the pressing plate 116.
Preferably, the elastic member 117 is a spring. To stabilize the spring structure, spring support posts 121 may be provided between the pressure plate 116 and the spring support plate 118. The spring can be sleeved outside the spring support 121.
The elastic member support plate 118 is centrally provided with a through hole. One end of the locking strut 119 is disposed on the bottom plate of the bracket 112, and the other end of the locking strut 119 passes through the through hole. The locking nut 120 is disposed at the other end of the locking support 119 and is used to limit the position of the elastic member support plate 118 on the locking support 119, so that the elastic member 117 can stably support the pressing plate 116. In addition, the position of the elastic member supporting plate 118 on the locking support 119 can be finely adjusted by adjusting the locking nut 120, and the length of the elastic member 117 can be adjusted by changing the position of the elastic member supporting plate 118, so that the pressure of the pressing head 102 can be changed, so that the pressing head 102 can be pressed against the display screen 103 to be tested with a suitable pressure.
The concrete process of the pressure head adjusting mechanism for adjusting the position of the pressure head 102 is as follows:
in the detection process, when the handle 113 rotates in the third direction, the handle rotating shaft 114 is driven to rotate, the handle rotating shaft 114 drives the cam 115 to rotate, so that the cam 115 presses the pressing plate 116, the pressing plate 116 moves towards the display screen 103 to be detected, and the pressing head 102 is driven to be close to the display screen 103 to be detected until the pressing head 102 contacts with the display screen 103 to be detected.
After the detection is completed, when the handle 113 rotates in the fourth direction (it should be understood that the third direction is opposite to the fourth direction), the handle rotating shaft 114 is driven to rotate, the handle rotating shaft 114 drives the cam 115 to rotate, so that the cam 115 leaves the pressing plate 116, and the pressing plate 116 moves upward under the elastic force of the elastic member 117 to drive the pressing head 102 to leave the display screen 103 to be detected.
It should be understood that the technical solution of the present invention is not limited thereto, and other structural designs of the ram adjusting mechanism may also be adopted.
Therefore, not only the movement of the driving ram 102 but also the adjustment of the pressure of the ram 102 can be realized by providing this specific ram adjustment mechanism.
Preferably, the apparatus further comprises: and an upper polarizer driving mechanism. The upper polaroid driving mechanism is matched with the pressure head adjusting mechanism. Specifically, when the pressure head 102 is driven by the pressure head adjusting mechanism to be close to the display screen 103 to be tested on the carrier 101, the upper polarizer driving mechanism drives the upper polarizer 108 to move, so that the upper polarizer 108 is located on the display screen 103 to be tested; when the pressure head 102 is driven by the pressure head adjusting mechanism to be away from the display screen 103 to be tested on the carrier 101, the upper polarizer driving mechanism drives the upper polarizer 108 to move, so that the display screen 103 to be tested is exposed.
Through the matching of the upper polarizer driving mechanism and the pressure head adjusting mechanism, the linkage of the pressure head 102 and the upper polarizer 108 can be realized, thereby saving manpower and improving efficiency.
Preferably, the upper polarizer driving mechanism may be implemented by the following structural design:
the upper polarizer driving mechanism includes: an upper polarizer mounting bracket 122, a sector gear 123, and a rack 124.
The upper polarizer mounting frame 122 is used for mounting the upper polarizer 108. The sector gear 123 is sleeved on the handle rotating shaft 114, so as to rotate along with the handle rotating shaft 114. The teeth of the sector gear 123 are engaged with the teeth of the rack gear 124, so that the rack gear 124 is moved by the rotation of the sector gear 123. One end of the rack 124 is connected to the upper polarizer mounting bracket 122, and the rack 124 is movable, so that the rack can move the upper polarizer mounting bracket 122.
Preferably, a guide rail may be disposed on the carrier 101, and a slider that can slide on the guide rail is disposed on the bottom surface of the upper polarizer mounting frame 122, so that the upper polarizer mounting frame 122 can be moved more conveniently.
Specifically, the working process of the upper polarizer driving mechanism is as follows:
the sector gear 123 rotates along with the handle shaft 114 to drive the rack 124 to move, and the rack 124 drives the upper polarizer mounting bracket 122 to move, so that the upper polarizer 108 mounted in the upper polarizer mounting bracket 122 can move.
Through the specific structural design, the sector gear 123 is sleeved on the handle rotating shaft 114, so that the linkage of the upper polarizer driving mechanism and the pressure head adjusting mechanism is realized, the labor is saved, and the efficiency is improved.
In a preferred embodiment, the touch screen tester 104 is removably mounted on the top plate of the stand 112. By having a removable structural design, replacement of the appropriate touch screen tester 104 is facilitated. In addition, the touch screen tester 104 may employ a sliding type mounting design, thereby facilitating adjustment of the position of the touch screen tester 104 for viewing by an inspector.
In a preferred embodiment, the apparatus further comprises: an eyepiece 125. The eyepiece 125 is movably disposed on the top plate of the support 112 and is used to observe whether the circuit board test point of the display screen 103 to be tested on the stage 101 coincides with the corresponding circuit board 105 or not, and whether the probe test point of the display screen 103 to be tested coincides with the corresponding probe 106 or not. Because the test site is smaller, it can be more accurately viewed through the eyepiece 125, reducing errors. More preferably, an eyepiece adjustment mechanism may also be provided to fine-tune the position of the eyepiece 125 so that it can be viewed more accurately.
Preferably, the apparatus further comprises: and a bracket inclination adjusting mechanism for adjusting the inclination of the bracket 112 with respect to the horizontal plane, so that the inspector can more conveniently observe the detection result of the touch screen tester 104 and observe whether the test point is overlapped with the corresponding test piece through the eyepiece 125.
Preferably, the support inclination adjusting mechanism can be realized by the following structural design:
support gradient guiding mechanism includes: two support bars 126 and at least two alignment pins 127.
The two support rods 126 are respectively disposed at the outer sides of the two side plates of the bracket 112, and each support rod 126 is provided with a plurality of first positioning holes 128. At least one second positioning hole is respectively arranged on two side plates of the bracket 112. Each positioning pin 127 passes through a first positioning hole 128 on each support rod 126 and a second positioning hole on the corresponding side plate of the bracket 112 to fix the bracket 112 and the support rods 126 together.
Since the support 112 is fixedly arranged at one end of the stage 101, the device only has the support rod 126 at the support 112, i.e. the support rod 126 is not arranged at the other end of the stage 101, so that the end of the stage 101 where the support 112 is arranged can be lifted by the support rod 126, and the device as a whole is inclined.
Specifically, the process of adjusting the inclination of the bracket inclination adjusting mechanism is as follows:
the positioning pin 127 can pass through different first positioning holes 128 and/or second positioning holes to adjust the inclination of the bracket 112.
It should be understood that there may be only one second positioning hole, and the adjustment of the inclination of the bracket 112 is mainly achieved by the positioning pin 127 passing through the different first positioning holes 128.
The number of the second positioning holes may also be multiple, so that when the inclination of the bracket 112 is adjusted, the inclination of the bracket 112 can be adjusted by passing the positioning pin 127 through different first positioning holes 128, and by passing the positioning pin 127 through different second positioning holes, the inclination of the bracket 112 can be adjusted in a wider range.
Therefore, with this structural design, adjustment of the inclination of the stand 112 can be achieved, so that the inclination angles of the touch screen tester 104 and the eyepiece 125 on the stand 112 can be adjusted so as to be suitable for observation by the inspector.
Preferably, the display screen detection device is made of anti-static bakelite materials, and all connecting parts are fixed by bolts, so that the whole structure is always stable.
Specifically, the sensor detection and the electrical detection of the device are carried out by the following processes:
the pressure of the ram 102 is first adjusted by the ram adjustment mechanism. The tilt of the bracket 112 is then adjusted by a bracket tilt adjustment mechanism. The display screen 103 to be tested is placed on the carrier 101. Whether the circuit board test point of the display screen to be tested 103 is overlapped with the corresponding circuit board 105 and whether the probe test point of the display screen to be tested 103 is overlapped with the corresponding probe 106 are observed through the eyepiece 125, and if the circuit board test point is not overlapped, the position of the stage can be adjusted through the stage driving mechanism to be overlapped. The pressure head 102 is moved downward to contact the display screen 103 to be tested by the pressure head adjusting mechanism, and at the same time, the upper polarizer driving mechanism drives the upper polarizer 108 to move to the display screen 103 to be tested. The inspector respectively obtains a sensor detection result and an electrical detection result by observing the display pictures of the touch screen tester 104 and the display screen to be tested 103. After the detection is finished, the pressure head 102 is lifted up through the pressure head adjusting mechanism and is away from the surface of the display screen 103 to be detected.
In summary, the display screen detection device of the embodiment of the invention can simultaneously perform sensor detection and electrical detection, thereby saving working procedures and manpower, improving detection efficiency and reducing hidden danger of possible damage to the display screen in the detection process.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A display screen detection device, comprising: the device comprises a carrying platform, a pressure head, a sensor detection unit and an electrical detection unit; wherein,
the carrying platform is used for placing a display screen to be tested;
the pressure head is arranged at one end of the carrying platform;
the sensor detection unit includes: the circuit board is arranged on the first surface of the pressure head; the touch screen tester is electrically connected with the circuit board and used for processing data acquired by the circuit board;
the electrical detection unit includes: the device comprises a probe, a backlight source, a lower polaroid and an upper polaroid, wherein one end of the probe is arranged on the first surface of the pressure head, and the other end of the probe protrudes out of the first surface of the pressure head; the backlight source and the lower polarizer are sequentially stacked on the bearing surface of the bearing platform from bottom to top; the upper polaroid is movably arranged on the lower polaroid;
when the display screen detection device detects, the upper polaroid is positioned on the display screen to be detected, the circuit board test point and the probe test point on the display screen to be detected are exposed, and the pressure head moves towards the bearing surface of the carrying platform, so that the circuit board, the probe and the circuit board test point and the probe test point on the display screen to be detected are in contact.
2. The display screen detection device of claim 1, further comprising: the stage driving mechanism drives the stage to rotate and move in a first direction and a second direction which are perpendicular to each other so as to adjust the position of the display screen to be tested on the stage, so that the circuit board testing point of the display screen to be tested on the stage is superposed with the corresponding circuit board, and the probe testing point of the display screen to be tested is superposed with the corresponding probe.
3. The display screen detection device of claim 2, wherein the stage drive mechanism comprises: a rotating table, a first direction moving table and a second direction moving table; wherein,
the first direction moving table is positioned on the rotating table, the second direction moving table is positioned on the first direction moving table, and the carrying platform is positioned on the second direction moving table;
the rotating platform drives the first direction moving platform, the second direction moving platform and the carrying platform to rotate;
the first direction moving platform drives the second direction moving platform and the carrying platform to move in the first direction;
the second direction moving platform drives the carrying platform to move in the second direction.
4. The display screen detection device of claim 1, further comprising: the support is arranged at one end of the carrying platform and comprises a top plate, a bottom plate and two side plates.
5. The display screen detection device of claim 4, further comprising: and the pressure head adjusting mechanism is arranged on the support and used for driving the pressure head to move and adjust the pressure of the pressure head.
6. The display screen detection apparatus of claim 5, wherein the indenter adjustment mechanism comprises: the handle, the handle rotating shaft, the cam, the pressing plate, the elastic piece supporting plate, the locking support column and the locking nut; wherein,
the handle is arranged on the outer side of one side plate of the bracket;
one end of the handle rotating shaft is connected with one end of the handle, and the other end of the handle rotating shaft is connected with the other side plate of the bracket;
the cam is sleeved on the handle rotating shaft;
the pressing plate is connected with the pressing head and comprises a first surface and a second surface which are opposite, the first surface of the pressing plate is connected with one end of the elastic piece, and the second surface of the pressing plate is opposite to the cam;
the other end of the elastic piece is connected with the first surface of the elastic piece supporting plate, and the first surface of the elastic piece supporting plate is opposite to the first surface of the pressing plate;
the center of the elastic piece supporting plate is provided with a through hole;
one end of the locking strut is arranged on the bottom plate of the bracket, and the other end of the locking strut penetrates through the through hole;
the locking nut is sleeved at the other end of the locking support column and used for limiting the position of the elastic piece supporting plate on the locking support column so as to adjust the length of the elastic piece and change the pressure of the pressure head;
when the handle rotates towards a third direction, the handle rotating shaft is driven to rotate, the handle rotating shaft drives the cam to rotate, the cam presses the pressing plate downwards, the pressing plate moves towards the display screen to be tested, and the pressing head is driven to be close to the display screen to be tested until the pressing head is contacted with the display screen to be tested;
when the handle rotates to the fourth direction, the handle rotating shaft is driven to rotate, the handle rotating shaft drives the cam to rotate, the cam is made to leave the pressing plate, the pressing plate moves upwards under the elastic action of the elastic piece, and the pressing head is driven to leave the display screen to be tested.
7. The display screen detection device of claim 6, further comprising: the upper polaroid driving mechanism is matched with the pressure head adjusting mechanism, and when the pressure head adjusting mechanism drives the pressure head to be close to the display screen to be tested on the platform deck, the upper polaroid driving mechanism drives the upper polaroid to move so that the upper polaroid is positioned on the display screen to be tested; when the pressure head adjusting mechanism drives the pressure head to be far away from the display screen to be tested on the carrying platform, the upper polaroid driving mechanism drives the upper polaroid to move so as to expose the display screen to be tested.
8. The display screen inspection device of claim 7, wherein the upper polarizer drive mechanism comprises: an upper polarizer mounting rack, a sector gear and a rack, wherein,
the upper polarizer mounting frame is used for mounting the upper polarizer;
the sector gear is sleeved on the handle rotating shaft, and the saw teeth of the sector gear are matched with the saw teeth of the rack;
the rack is movable, and one end of the rack is connected with the upper polaroid mounting frame;
the sector gear drives the rack to move along with the rotation of the handle rotating shaft, and the rack drives the upper polaroid mounting rack to move.
9. The display screen detection device of claim 4, further comprising: and the bracket inclination adjusting mechanism is used for adjusting the inclination of the bracket relative to the horizontal plane.
10. The display screen detecting device of claim 9, wherein the stand inclination adjusting mechanism comprises: two support rods and at least two positioning pins; wherein,
the two support rods are respectively arranged at the outer sides of the two side plates of the bracket, and each support rod is provided with a plurality of first positioning holes;
two side plates of the bracket are respectively provided with at least one second positioning hole;
each positioning pin penetrates through the first positioning hole in each supporting rod and the second positioning hole in the corresponding side plate of the support to fix the support and the supporting rod together;
the positioning pin can penetrate through different first positioning holes and/or second positioning holes to adjust the inclination of the bracket.
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| CN201710083442.0A CN106841990B (en) | 2017-02-16 | 2017-02-16 | Display screen detection device |
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| CN114035020A (en) * | 2021-09-29 | 2022-02-11 | 重庆康佳光电技术研究院有限公司 | Back board circuit detection device and method |
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